(Encyclopedia) YaroslavlYaroslavlyərəsläˈvəl [key], city (1991 est. pop. 640,000), capital of Yaroslavl region, E European Russia, on the upper Volga River. It is a river port, a major rail junction…
Engines are the beating hearts of human innovation, powering everything from rockets and ships to cars and planes. Over the last century, engineers have created machines capable of producing…
(Encyclopedia) pile, post of timber, steel, or concrete used to support a structure. Vertical piles, or bearing piles, the most common form, are generally needed for the foundations of bridges, docks…
(Encyclopedia) motorboating, sport of navigating a motor-powered vessel on the water. It is done on either fresh- or saltwater and may be competitive or recreational. The first successful motorboat…
(Encyclopedia) snorkel, tube through which a submarine or diver can draw air while underwater. When in use, the top of the snorkel tube extends above the water surface into the air. The first…
Charles Franklin Kettering
Born: 1876
Birthplace: Ohio
Engine starting devices and ignition system—Kettering invented the first electrical ignition system and the self-starter for automobiles…
(Encyclopedia) ship, large craft in which persons and goods may be conveyed on water. In the U.S. Navy the term boat refers to any vessel that is small enough to be hoisted aboard a ship, and ship is…
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